[openib-general] RDMA Read performance

Grant Grundler iod00d at hp.com
Thu Sep 1 13:49:07 PDT 2005


On Fri, Aug 19, 2005 at 09:30:09AM -0700, Sean Hefty wrote:
> Galen Shipman wrote:
> >Using: ibv_rc_pingpong --size=1048576 I am seeing 942 Mbytes per sec.
> >
> >As I said previously, we have an internal application that sees ~950 
> >MBytes per sec using RDMA Write. It looks like ibv_rc_pingpong is using 
> >send receive  and not RDMA. Perhaps someone (Roland) has an RDMA Read 
> >test they can point me to?
> 
> I'm not aware of an RDMA read test.  Try increasing max_rd_atomic and 
> max_dest_rd_atomic to the maximum values supported by the HCA.

Galen,
Have you had a chance to try Sean's suggestion?

I want to but only have lame excuses (time) for not doing so.

thanks,
grant



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